What is Renewable Energy? The Smartest Power Choice in 2025

What is Renewable Energy

Every sort of equipment you need in your daily life depends on energy.

But do you know? The traditional energy is running on borrowed time. Fossil fuels are decaying and are driving climate change faster than we can adapt. Meanwhile, energy bills are creeping higher, grid is under pressure, and blackouts are stacking up.

That’s why people are asking bigger questions now. What is energy? Where should it come from? Can it be cheaper, cleaner, and smarter? Yes, it can.

You just have to incorporate renewable energy systems & tackle today’s energy problems head-on. They are sustainable, reliable, and makes more sense in 2025.

Renostain gives you power systems based on these renewable energy sources. From solar and battery combos to off-grid solutions, we create energy strategies that work in today’s climate-challenged world.

So, let our experience guide you to power your homes smartly with renewable energy.

What is Renewable Energy?

Renewable energy is power generated from natural sources that replenish themselves. E.g. sunlight, wind, and water. They turn natural forces into usable electricity or heat without the nasty side effects of carbon emissions. So, they are reliable & clean.

Traditional energy sources, like fossil fuels takes years to form, then dug up, burned, and gone forever. But renewable energy doesn’t come with fear of depletion because it keeps coming back at the rate higher than its consumption.

In the era of rising temperatures, extreme weather, and environmental instability. Transition to renewable energy systems is the only way toward a secure and energy stable future.

Why Do We Need Renewable Energy Now More than Ever?

The energy crisis isn’t just about prices anymore, but survival. Our current systems are outdated, fragile, and heavily polluting. Fossil fuels release a heavy amount of greenhouse gases and carbon emission and changing the Earth’s atmosphere drastically.

The CSIRO’s State of the Climate 2024 report shows Australia’s average temperature has already increased by an average of 1.51 °C since 1910, due to global warming.

Plus, the energy costs are also rising due to increased demand & depletion of sources. The result is in the form of sky rocketing bills and frequent blackouts.

Australians faced an average 20-25% increase in electricity prices according to the Australian Energy Regulator (AER). These costs are expected to rise further without intervention from cleaner & more stable energy sources.

Moreover, most of Australia’s coal fired power stations will be non-functional by 2030. Hence, Renew energy Australia is needed now more than ever. Because it can reduce this dependency on harmful fuels and future-proof the homes and businesses.

Common Renewable Energy Sources

Let’s go through the sources can we use for renewable energy, what they power, how much they can generate & how to harness them.

1. Solar Power: Australia’s Most Abundant Resource

Starting from most abundant and efficient energy resource. Solar energy can be simply trapped through panel at every rooftop and used for all electricity needs.

Australia leads globally in rooftop solar adoption, and for good reason. Solar irradiance levels are averaging 4.5–6.5 kWh/m²/day across much of WA. Plus, with governments incentives & rebates, solar energy is one of the most efficient renewables to invest in Australia.

Energy Systems to Harness Solar Power:

Photovoltaic (PV) Panels

Convert sunlight into electricity for homes, businesses, and industries. (Monocrystalline panels being the most efficient today at 20–22%.)

Solar Inverters

Convert DC to AC power for household or grid use.

Solar Battery Systems

Store excess daytime energy for night or backup use.

Solar Hot Water Systems

Direct solar heating for domestic water use through evacuated tubes or flat-plate collectors.

Energy Output Potential:

  • A 6.6kW rooftop solar system can generate approx. 24–30 kWh per day in Perth.
  • Larger Industrial Solar Perth systems (e.g., 100kW) produce 400–500 kWh per day.
  • Solar hot water system reduces water heating energy up to 70% annually.

Applications:

  • Residential energy independence with solar and battery
  • Commercial buildings reducing peak demand costs.
  • Off-grid solutions combining solar panels and batteries for rural independence.
  • Integrated EV charging solutions.

2. Wind Energy: Coastal & Inland Winds

The kinetic energy of moving air can be used for electricity generation through wind turbines. These turbines are suitable for both on-shore (sea or rivers) and off-shore (land) locations.

Australia’s southern and western coasts are one of the world’s best wind resources. Their wind speeds average 7–9 m/s in ideal locations. If we use them for generating electricity, they can manage the energy costs efficiently.

Energy Systems Used:

Horizontal Axis Wind Turbines (HAWT)

Large-scale commercial farms.

Vertical Axis Wind Turbines (VAWT)

Suitable for urban or smaller applications but less common.

Hybrid Systems

Combined with solar panels and batteries for consistent energy supply.

Energy Output Potential:

  • A modern turbine (3–5MW capacity) generates around 12–20 GWh per year.
  • Residential wind turbines (5–10kW) can produce 8,000–15,000 kWh per year.

Applications:

  • Large-scale wind farms feeding the grid.
  • Community-based renewable projects.

3. Geothermal Energy: Earth's Heat for Endless Power

Geothermal energy comes from the reservoirs in Earth’ interior. If these reservoirs are hydrothermal, they can be extracted simply through wells or other means due to their permeability. Otherwise, there is need for hydraulic stimulation.

Australia has vast untapped geothermal resources in SA and WA. Temperatures over 150°C at shallow depths are brought to surface, and their stored heat help in electricity generation.

Energy Systems Used:

Enhanced Geothermal Systems (EGS)

Create reservoirs in hot dry rocks.

Binary Cycle Power Plants

Use lower-temperature water to generate power via heat exchange fluids.

Direct Use Systems

For heating buildings or greenhouses.

Energy Output Potential:

  • Pilot plants can generate 1–10MW for communities or small industries.
  • Large systems in geothermal-rich areas can scale up to 100+ MW per site.

Applications:

  • Industrial heating and energy for mining operations.
  • Residential heating in colder climates.

4. Hydropower: Reliable & Large-Scale Renewable Power

It utilizes the energy of moving water (from higher to lower height) in large reservoirs. These reservoirs can be stored like dams or moving like rivers with consistent flowing energy. Plus, they also have benefits like irrigation water, drought control and flood management.

Hydropower currently provides 6% of Australia’s total energy. So, it is a stable part of the renewable mix but limited by geographical concerns.

Energy Systems Used:

Run-of-River Systems

Generate power without large reservoirs.

Pumped Hydro Storage

Acts like a giant battery and stores excess energy.

Reservoir Dams

Traditional hydroelectric plants.

Energy Output Potential:

  • Major plants like Snowy Hydro produce 4,100MW+.
  • Small hydro can supply 100kW–10MW for rural or off-grid systems.

Applications:

  • National grid stabilisation.
  • Energy storage support for solar panels and batteries.
  • Regional renewable energy hubs.

5. Ocean Energy: Power from Waves, Tides & Currents

It uses the kinetic and thermal energy of seawater, like in waves or currents for electricity. Australia’s coastline holds massive wave energy potential but this tech is still largely in trial phases. The devices to extract energy from wave and tidal current are still in making.

Energy Systems Used:

Wave Energy Converters (WECs)

Capture kinetic energy from surface motion

Tidal Turbines

Underwater turbines harness predictable tidal flows.

Oscillating Water Columns

Air-driven turbines from rising/falling water

Energy Output Potential:

  • Demonstration projects generate 250kW–1MW.
  • Future large-scale installations can deliver 50–100MW per site.

Applications:

  • Coastal communities.
  • Military or research facilities.

6. Bioenergy: Turning Waste into Useful Power

Bioenergy uses the organic materials called biomass as a fuel to generate electricity. E.g. wood, charcoal, dung, etc. It provides around 3% of Australia’s electricity through combustion, digestion, and gasification of organic waste.

You can decarbonise agriculture and manufacturing with it.

Energy Systems Used:

Anaerobic Digesters

Break down organic waste into biogas (methane + CO2).

Biomass Boilers

Burn plant material to produce steam for energy.

Gasification Systems

Convert waste into syngas for fuel or power.

Energy Output Potential:

  • A mid-sized plant processing 50,000 tonnes of waste can generate 5–10MW.
  • Smaller farm-based systems produce 100–500kW.

Applications:

  • Waste-to-energy for municipalities.
  • Industrial heat and power.

Benefits of Renewable Energy Systems

Switching to renewable energy systems is the smartest financial and practical move right now. The reasons for that are given below:

1. Financial Freedom & Cost Control

  • Reduce electricity bills with solar panels and batteries.
  • Get an independent energy source.
  • Access rebates for renew energy Australia.

2. Energy Independence

  • Off-grid options through solar battery
  • Power your home, EV, and life without relying on unstable grids.
  • Great for rural and remote communities.

3. Environmental Impact

  • Invest in a healthier planet with lower carbon emissions.
  • Less pollution with cleaner air and water.
  • Supports global climate targets.

4. Tech Innovation & Lifestyle

  • Perfect for home automation and smart tech.
  • Integration with EV charging and modern systems.

Busting the Myths About Renewable Energy

Myth

Reality

It’s too expensive.

Affordable Energy Solutions are here. Tech advances have dropped solar battery prices WA significantly.

Solar only works in summer.

Systems capture energy even on cloudy days, just less of it.

Batteries aren’t reliable.

Modern solar battery tech is long-lasting and built for tough use.

Only for the rich.

Rebates, financing, and falling prices make it accessible for most.

Too complicated to install.

With experts like Renostain, it’s a smooth, guided process.

Why Australia is Perfect for Renewables?

Australia’s natural conditions make it one of the best places in the world for renewable energy systems.

With abundant sunshine almost year-round, it’s no surprise that solar panels Perth are a popular choice for homes and businesses. Strong coastal winds also suit the wind farms. While our existing hydro resources help supplement renewable power across the grid.

Plus, Australians are tech-savvy and quick to embrace innovation. From smart homes and EVs to solar hot water system technologies, we’re adopting green tech at a fast pace. This cultural shift is also driving job growth in renewable energy sector.

Want to Future-Proof Your Energy Source?

Power A Greener & Smarter Future with Renostain

We work at the front-line to meet Australian energy needs with sustainable sources. Our affordable energy solutions can help you build a smart home, power a business, or live off-grid. Our services include:

  • Custom solar panels and batteries.
  • Seamless solar battery
  • Clever EV charging linked to your solar setup.
  • Future-ready home automation.

If you’re tired of old-school power companies dictating your future, let us help you explore the possibilities of green energy.

Contact Us Now

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